20494760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3583}}^1$

素因数の和:3618

約数の個数: 64

約数和(自身を含む): 54190080

約数和(自身を除く): 33695320

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 220, 260, 286, 440, 520, 572, 715, 1144, 1430, 2860, 3583, 5720, 7166, 14332, 17915, 28664, 35830, 39413, 46579, 71660, 78826, 93158, 143320, 157652, 186316, 197065, 232895, 315304, 372632, 394130, 465790, 512369, 788260, 931580, 1024738, 1576520, 1863160, 2049476, 2561845, 4098952, 5123690, 10247380, 20494760]

約数ペア:

[(1, 20494760), (2, 10247380), (4, 5123690), (5, 4098952), (8, 2561845), (10, 2049476), (11, 1863160), (13, 1576520), (20, 1024738), (22, 931580), (26, 788260), (40, 512369), (44, 465790), (52, 394130), (55, 372632), (65, 315304), (88, 232895), (104, 197065), (110, 186316), (130, 157652), (143, 143320), (220, 93158), (260, 78826), (286, 71660), (440, 46579), (520, 39413), (572, 35830), (715, 28664), (1144, 17915), (1430, 14332), (2860, 7166), (3583, 5720)]